Washer-Dryer Air Duct Damper Layout for Condenser-Free Drying
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Solution Overview
Problem
Existing integrated washer-dryers face inefficiencies in drying due to limited temperature difference between the outer drum and air, leading to high energy consumption and reduced capacity, with previous solutions like condenser tubes complicating the structure and wasting water.
Innovation Solution
A clothes treatment device with a drum assembly featuring a damper that switches between two positions to control air flow, omitting the condenser structure for increased capacity and efficiency, using a heating member in the air channel assembly to manage moisture and temperature during the drying process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a condenser tube is added to the rear of the outer drum to improve drying efficiency, then drying efficiency is improved, but the volume of the drum is reduced, affecting the capacity of the clothes treatment chamber
Solution Approach 1:
The invention extracts and removes the condenser tube structure from the system. Instead of using a condenser tube at the rear of the outer drum, the patent employs a different drying mechanism that does not require condensation, thereby eliminating the space occupation and avoiding reduction of the drum volume while maintaining drying functionality.
Solution Approach 2:
The invention inverts the traditional condensation-based drying approach. Rather than condensing moisture inside the drum using a condenser tube, the system uses a blower to directly exhaust hot and humid air from the drum through alternative air outlets, achieving drying through air replacement rather than condensation.
2Productivity
If a condenser tube is added to the rear of the outer drum to improve drying efficiency, then drying efficiency is improved, but the structure becomes more complicated
Solution Approach 1:
The invention extracts and removes the condenser tube structure from the system. Instead of using a condenser tube at the rear of the outer drum, the patent employs a different drying mechanism that does not require condensation, thereby eliminating the space occupation and avoiding reduction of the drum volume while maintaining drying functionality.
Solution Approach 2:
The air channel assembly with multiple air outlets serves multiple functions: it provides drying capability without condensation, maintains drum volume, and simplifies the overall structure. The blower system also serves dual purposes of air circulation and moisture removal.
3Productivity
If water-cooling condensation is used to improve drying efficiency, then drying efficiency is improved, but water resources are wasted and energy consumption increases
Solution Approach 1:
The invention converts the harmful effect of hot and humid air that needs to be removed into a beneficial drying mechanism. By using the blower to directly exhaust this air through alternative outlets, the system transforms what would be a waste problem into an effective drying method that consumes less energy and no water.
Solution Approach 2:
The system uses the existing hot and humid air inside the drum as the drying medium itself, circulating and exhausting it through the alternative air outlets. This self-service approach eliminates the need for external water-cooling systems and reduces energy consumption by utilizing the natural temperature difference for drying.
4Temperature
If a blower is added between the outer drum and case to reduce temperature difference, then temperature difference control is improved, but drying efficiency remains low due to insufficient hot air discharge
Solution Approach 1:
The invention segments the air outlet functions by providing alternative air outlets (first air outlet and second air outlet) separate from the traditional condenser tube location. This segmentation allows independent control of air circulation and hot air discharge, enabling the blower to effectively remove hot and humid air while maintaining appropriate temperature differences for drying.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves high drying efficiency, low energy consumption, and increased capacity by optimizing air flow and temperature management, eliminating the need for water condensation and simplifying the structure.
Implementation Method 1
a heating member provided inside the air channel assembly
Implementation Method 2
a blower configured to guide air to flow
Implementation Method 3
hot and humid air in the drum condenses on a drum wall to form condensed water, thereby achieving the effect of clothes drying
Implementation Method 4
based on heat exchange between an outer drum and the outside air
Data Source
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AI summary
A laundry treatment device (100), comprising: a cylinder assembly (10), provided with a first air inlet (101), a first air outlet (102) and a second air outlet (103), both the first air outlet (102) and the second air outlet (103) being formed on the upper part of the side wall of the cylinder assembly (10); and a laundry drying assembly (20), comprising an air duct assembly, a heating element (22) and a fan (23). The air duct assembly is provided with a second air inlet (2103) and a damper (241), and the damper (241) may be switched between a first position and a second position. In a state where the damper (241) is switched to the first position, the damper (241) closes the second air inlet (2103) and opens the first air outlet (102). In a state where the damper (241) is switched to the second position, the damper (241) opens the second air inlet (2103) and closes the first air outlet (102).